package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SkuItemSaleAttrsVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemBaseAttrGroupVo;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;


/**
 * @author wangqian
 */
@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    private SkuImagesService skuImagesService;

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private AttrGroupService attrGroupService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    ThreadPoolExecutor executor;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<SkuInfoEntity>();

        String key = (String)params.get("key");
        if(StringUtils.isNotEmpty(key)){
            wrapper.and(w->{
                w.eq("sku_id",key).or().like("sku_name",key);
            });
        }
        String brandId = (String)params.get("brandId");
        if(StringUtils.isNotEmpty(brandId)){
            if(!brandId.equals("0")){
                wrapper.eq("brand_id",brandId);
            }
        }
        String catelogId = (String)params.get("catelogId");
        if(StringUtils.isNotEmpty(catelogId)){
            if(!catelogId.equals("0")){
                wrapper.eq("catalog_id",catelogId);
            }
        }
        String min = (String)params.get("min");
        if(StringUtils.isNotEmpty(min)){
            wrapper.ge("price",min);
        }
        String max = (String)params.get("max");
        if(StringUtils.isNotEmpty(max)){
            try{
                BigDecimal bigDecimal = new BigDecimal(max);
                if(bigDecimal.compareTo(new BigDecimal("0"))>1){
                    wrapper.le("price",max);
                }
            }catch (Exception e){
                e.printStackTrace();
            }
        }
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),wrapper);

        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getskusBySpuInfo(Long spuId) {
        List<SkuInfoEntity> list = this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id",spuId));
        return list;
    }

    /**
     * 查询详情
     *
     * 涉及异步编排功能
     * @param skuId
     * @return
     */
    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();

        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(()->{
            //1、sku基本信息获取  pms_sku_info
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        },executor);

        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res)->{
            //3、spu的销售属性组合（sku组合）
            List<SkuItemSaleAttrsVo> saleAttrsVos = skuSaleAttrValueService.getSaleAttrsBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrsVos);
        },executor);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res)->{
            //4、获取spu介绍
            SpuInfoDescEntity desc = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesc(desc);
        },executor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync((res)->{
            //5、获取spu规格参数信息
            Long spuId = res.getSpuId();
            Long catalogId = res.getCatalogId();
            List<SpuItemBaseAttrGroupVo> spuParams = attrGroupService.getAttrGroupWithAttrsBySpuId(spuId,catalogId);
            skuItemVo.setGroupAttrs(spuParams);
        },executor);

        CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(()->{
            //2、sku图片信息  pms_sku_images
            List<SkuImagesEntity> images = skuImagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        },executor);


        CompletableFuture.allOf(saleAttrFuture,descFuture,baseAttrFuture,imageFuture).get();
        //6、
        return skuItemVo;
    }


}